Steam trap



. C. E. WALSH.

` STEAM T RAP. APPLICATION FILED JAN. I5. |921.

Patented Sept. 5, 1922.

Patented Sept.' 5, 1922,

1,427,9sy f f yCHARLES n. vvvAnsr-r, ononnvnLAivJ/J', oHro:

. STEAM TRAP.

Application mea January 15,1921# serial no. 437,443.

To all whom t may cofacem: v n Be it known that I, CHARLns WALSH, a citizen of the 4`United States,fresiding at Cleveland, in the county ofCuyahoga' and of which the followingis a specification.

rl`his invention relates to steam traps, and more particularly to traps which are vem y'ployed with the lines of vacuum, and pressure heating systems. n f The primary ob'ect',` of 'the present inven- Ation isl to provide a Simple and reliable trap 'construction embodying an .outlet 'valve through which water of condensation that may accumulate withinthe trap isperiodically discharged,automatically. f.

, *A further ob 'ect of the invention is the provision ofa trapk of this character that isf noiseless in operation, andthat comprifsesf comparatively few parts, making'it economi-A cal to manufacture. n l l, A further objectfof the invention is the lprovision of meansfor efficiently grinding the contact surfaces of the valve and valveseat ofthe function.

The improvement further provides for easy access to the interior, orto the working parts ofthe trap, thereby facilitating the assembling of the elements and reducing to a minimum the cost of repairs if the operating parts become damaged. v

With these and other apparent obiects and advantages in view, the invention consists in the construction, combination and ar#4 rangement of elements as hereinafter described and particularly set forth in the apn pended claims, reference being had 'to the accompanying drawings which are made part of the specification, y characters beingemployedto designate corn responding parts.

In the said drawings Figure l is a central vertical section through thetrap, showing the valve closed. Fig. 2 is an end view of a tail piece used in connection with the trap. Figs. 3 and 4 are fragmentary central ver.- tical sections taken at right anglesto each other, illustrating the means for grinding the valve and valve seat, and Fig. 5 is a view of a type of instrument used in connection with the grinding.

The present embodiment of my invention comprises a casing l, having a side branch 2 extending therefrom above the bottonnsaid having an outwardly projecting flangea Vadapted.toengage the top of thecasing l,k

'skirt' Sbghaving an rexternal thread 3C ,adaptto an internal thread lL in the top of the casing 11, and whenfassembled asealing tavalv'e-seat fitting 6 having afrusto-conical "surface 6a. A tubular valvefstem 7 is adaptedto seat on the surface 6a and extends vertically in the casing, the said stem carrying trap, to maintain a perfect valve Y f `pendstherefrominto the bore of the tubular f yforming a vertical central guide for the valve. yThe post 9 has a shoulder 9a on f which is seateda ring 10, and a spring 10a is mounted on thel -post' between said ring l() ,and thel boss 3C. The spring 10a cushions the similar reference v casing through the connection 2. The water of condensation collects in the chamber 11 1 rrically disposed apertures 7 which are con- 'efliciency in the valve function.

branch being yadapted Yfor connection with a f radiator outlet, not` shown, byv means of a tail-piece 2a .attached to said ybranch. by` a coupling 2". State of Ohio, have invented certain new and useful Improvements in Steam Traps,-

The casingl is provided at its upper end ywith a suitable cover 3, which is shown as andbeingprovided belowv said flange with a gasket is' preferablyy interposedy 'between the flange 3a and the top of the casing.

The bottomof thecasing is provided withv neck 5, having its lower portion provided with a thread 5a, for the reception of a pipe,

which may be the return pipe ofa vacuum,

or pressure heating system.` ,n

Vithin the neck 5, above the threadr 5a is a float 8. A post 9 is firmly attached, ,cen trally, to a boss 3C. on the ycover 3, and destem` '7, yhaving 5a sliding yfit therein `and upward action ofthe valve and prevents chattering7 or renders the trap noiseless in its action. o

The post 9'is provided with oney or more annular grooves 9", within the bore of the stern, rinto which lwater of condensation, or sweat 'which forms on the post, seeps, and forms arwater seal between the post and the valve stem 7. This is a salient feature of the improved construction, inasmuch as it yaccelerates the vacuum function. In operation, the air and steam enters the and causes the float 8 to rise, therebyr lifting the valve stem 7 oft the yseat 6a. The water 'is then discharged from the chamber 11 through theneck 5 into the return line pipe connected kwith said neck. The stem 7 is provided with two diamet tributary factors in means for maintaining .For arrying out this feature a hey is pro` vided, an embodiment of which is shown in Figs. 3, e and 5. A stock l2 has a squared stem i2 which adapts it to be gripped by a brace, wrench, or other suitable operating tool. Spring arms 12b are firmly attached to the stool; l2, and extending therefrom are provided with ingers 12C, which are adapted to engage the apertures 7 in the "stein 7, the arms l2" being inserted through longs the serviceable life of the trap.

The apertures 7n maybe tapped and plugs l provided as closures therefor, or one or both of said apertures may be .left open for 'the escape of air when steamis initially `turned into the s fstein and alsor for the discharge of water which may be in the chamber l1 below the float 8 after steam has been cut off from the system, or from; the part thereof with which the trap may be einployed.

The bore 2 of the tail-piece 2 is preferably square in cross-section, to facilitate the connection `of said tail-piece with the vradiator by the insertion and rotation of a removable instrument-in the bore. i y

,daring thus described my invention, what claim as new and desire to secure by Letters Patent, is1- l. In a steam trap, the combination of a casing, and aclosure cap in the top thereof, said casing having an inlet connection, and provided with a discharge connection in the bottom thereof, a valve-seat in the discharge element, a valve operative on said seat, said valve comprising a vtubular `stem having a iat attached thereto a guide element fixed in the' closure cap, depending therefrom and having a sliding lit in the bore of the tubular stem, apertures providedin the valve stein above the Valveseat, for engagement with a key adapted for insertion through the =';utlet,"whereby said valve may be rotated on the valve-seat.

Q. In a steam trap, the combination of a casing, and a closure cap in the top thereof, said casing having aninlet connection, and provided with a discharge connectionin the bottom thereof, a valve-seat in the discharge connection, a valve operativeonsaid seat, said valve comprising a tubular stem having a iioat attached thereto, a. guide element fixed in the closure cap, `depending therefrom and having av sliding lit in the bore of the tubular stem, apertures provided in the valve stem above the valve-seat, for engagement with a hey adapted for insertion through the outlet, wherebysaid valve may be rotated on the valve-seat, means for closing said apertures after the key has been removed.

in testimony whereof I aiX my signature.

CHARLES E. WALSH. 

